updates of framework

- focus on AWG output power and lowpass characteristics

Functions/plot_eye.m

@@ -0,0 +1,40 @@
+function plot_eye(signal, fs, fsym)
+
+
+    histpoints = 512;                                               %% verticale resolution
+    histpoints = floor(histpoints/2)*2+1;                           %% to have the eye digram centered around one point make the vertical resolution uneven
+    histpoints_horizontal = 256;                                    %% horizontal resolution
+    hist_data=zeros(histpoints,histpoints_horizontal );             %% initilize eye diagram
+    x = real(signal);                                               %% make input signal real
+
+    x = resample(x,fsym*histpoints_horizontal/2,fs);                                        %% down sample to original fsym rate 
+    if mod(length(x),2)==1                                          %% if the signal lenght is not divisible by 2 (symbols displayed in the eye diagram are 2) remove last symbol
+    x = x(1:end-1);
+    end
+
+    %x = resample(x,histpoints_horizontal/2,1);                      %% reshape signal to high resolution eye diagram in this case 2 symbols are upsampled to 512 values
+    eye_mat = reshape(x(1:end-mod(length(x),histpoints_horizontal)),histpoints_horizontal,floor(length(x)/histpoints_horizontal)); %% reshape signal into 256 rows each row has the histogram(eye data of all symbols)
+
+    %defult value case
+    maxA = max(eye_mat(:))*1.1;
+    minA = min(eye_mat(:))*1.1;
+
+    difference= maxA-minA;
+
+    data_ind_y=round((eye_mat-minA)/difference*(histpoints-1)) +1;
+
+    for n=1:size(data_ind_y,1)
+        [nn,cc] = hist(data_ind_y(n,:),1:histpoints);
+        hist_data(:,n)=hist_data(:,n)+nn.';
+    end
+
+    figure;
+    image(hist_data);
+    colormap(cbrewer2("Reds",92));
+
+    y = string(linspace(minA,maxA,16));
+    yticks(linspace(0,histpoints,16));
+    yticklabels(y);
+
+
+end